Attachment for plows.



E. DAVIDSON. ATTACHMENT FOR FLOWS. aPPucmou min usc. ra. |916.

Patented July 30, 1918;

2 SHEETS-SHEET I.

E. DAVIDSON. ATTACHMENT FOR PLOWS.

APPLIEATION FILED DEC. IB. |916. 1,273,829.

Patented July 30, 1918.

2 SHEETSSHEET 'L Hoz au 144 UNITED STATES PATENT OFFICE.

EMIL DAVIDSON, 0F NORTHWOOD, NORTH DAKOTA.

ATTACHMENT FOB PLOWB.

Speoieatlon of Letters Patent.

Application led December 18, 1916. Serial No. 187,847.

. it appertains to make and use the same.

This invention relates to an attachment for plows and is in the nature of an improvement of the construction disclosed in my Patent No. 969,091, dated August 30, 1910.

An object of the invention resides in the provision of an improved mechanism for assisting the mold board of the plow in turning the earth uplifted from the furrow. A further object of the invention resides in so constructing the device that the soil as it is turned may be cut or so that it may be turned smoothly. I

A further object of the invention resides in the general improvement of the structure of devicesl of this class and in so constructing the particular device that it may be attached to various plows now in use.

lVith these and other objects in view, such as will appear as my description progresses, my invention comprises the combination and arrangement of parts as set forth in and falling within the scope of the appended claims.

In the drawings:

Figure 1 is a side elevation of a plow showing my attachment in place thereon;

Fig. 2 is a plan view of the same;

Fig. 3 is a rear elevation;

Fig. 4 is an enlarged view of the turning roller;

F ig'.` 5 is a horizontal sectional view taken therethrough showing the positions of the knives;

Fig. 6 is a similar view showing the knife adjusting mechanism,- l,

Fi 7 is a detail showing the manner in l' whic the roller carrying arm is mounted on the plow beam, and

Fig. 8 is a fragmental detail.

The plow illustrated in the drawing includes a beam 1 which carries a plow 2, which plow includes a land side and a mold board.

I have provided a bearing member 3 ou frame 18 is a the plow beam 1 which bearingmember has a pair of vertically alined apertures therein. Ilvotally moundin this bearing member iS an arm 4 which-.has a finger 5 extending through the alined apertures in said bearing member which linger is held therein by a cottcr pin 6. Secured to the end of the arm 4 is an arm 7 through which an eye bolt 8, having a nut 9 thereon, slidably extends. flo the end of this eye bolt 8 a coil spring 10 1s attached, which spring extends and is at- .Patented July 80, 1918.

tached to an ear 11 on the` low beam 1.

The purpose of this spring, e tension of whic may be varied by the nut 9, is to draw the arm 4 into engagement with a stop shoulder 12, which stop shoulder limits the movement of the arm so that it extends rearwardly and arallel to the plane of the beam 1. Adj ustalily secured to the arm 4 b means of a set screw 13 is a block 14 which is p vided with a plurality of radial serrations in its upper face for the adjustable engagement of a casting 15 with said block 14, the casting being mounted on this block 14 and is held in any of its rotative positions by meanslof a fastener 16 which draws the seri-ations, which are formed on thecasting, tightly into engagement with the serrations on the block. lhis casting 15 is adjustably mounted in any suitable manner on a bracket 17 to which a frame 18 is secured. Depending from and rotatably mounted in this shaft 19 on the upper end of which a beveled gear 20 is secured.' A roller R is secured to this shaft 19, which roller includes ,a circular upper plate 21 and a similar but smaller lower plate 22. Extending between these plates adjacent to the peri pheries thereof are small rollers 23 each of .which has a knife 24 secured thereto. The upper end of each of these rollers 23 is Iprovided with a pinion 25, which pinions mesh with a gear 26. This gear 26 is Secured to the upper plate 21 by a set screw 27 which passes through an elongated arcuate slot 28 in the' gear. The teeth of the gear intermesh with the teeth of the pnions 25 so that by loosening the screw 27 and turning the gear 26 the knives 24 may be either turned to extend into the cylinder or to extend therefrom. A, pinion 29 intermeshes with the gear 20, which pinion is secured to a shaft 30 on one end of which is a balance wheel 31 and the other end of which is connected to a shaft 32 by a universal joint 33. This shaft 32 is formed 0f the roller R cornes two telescopic members so that the eective len hs may be varied as the necessity arises. This shaft is connected to a pinion shaft 34 by a pivotal joint 35, on which shaft 34 a pinion 36 is secured. This inion is adapted to intermesh with a beve ed gear on the tractor not shown. The roller R extends downwardly across the rear upper edge of the mold board ofthe plow when it is 1n its normal operative position.

When the device is in use the plow is drawn in the usual manner and the roller R will be in the position last mentioned, being held in such position by the spring 10.

he knives 24 may either be extended from ori positioned within the roller R. In the former case the upliited earth from the furrow will be out :while in the latter case it will merely he rolled over smoothly. In either case, however, the turning over of the earth from the' furrow by the mold board of the plow will be materially assisted. When into contact with a stone or othemimmovable body it will be permitted to swing with relation to the plow beam 1 on the finger 5 as a pivot, the spring 10 at this time being extended. When, however, the obstruction is passed the s ring 10 will operate to again move the ro ler R to its normal position.

, While I have illustrated and '.described a particular embodiment of my invention, it

` has; merely been for the sake of. convenience 4 u y l` do not wish to be limited to that particular embodiment as it is obyious that n'ennerous changes may be made-1n the details di construction without departing from he spirit of the invent1on or exceeding the scope of the appended claims.

and

What I claim is:-

1. Aplow attachment comprisin abrlwket adapted for attachment to the p ow beam and having a stop` thereon, an arm rotatably mounted in said bracket, a spring for normally maintaining said arm in contact with said stop, a bracket adjustablv secured to said arm,` a roller carried by said bracket. which roller comprises a pair of plates and a plurality of knife carrying rollers extending; between said plates and means for rotating the first mentioned roller.

2. Inlan attachment for plows, a roller comprising a pair of s aed plates, a piu rality `of rollers extendin between and rotatably mounted in sai platesl a knife mounted on each of said last mentioned ro1lers, means for adjusting said last mentioned rollers and means for maintaining them in their adjusted positions.

3. In an attachment for plows, a turning roller including a plurality of spaced con` verging'| rollershaving knives thereon and means for adjusting' the knives to extend at various angles from the turning roller.

4, `The combination with a plow including a mold board and a land side, oa turning rollerincludinp; a plurality of spaced c0nverging rollers 4and mounted above the ed e of the mold board, means for resilient y holding said roller in 'such position and means for varying the position ofthe roller.

In testimony whereof I aiiixmy signature in the presence of two witnesses.

, y DAVIDSON.

Witnesses: Om 0. Tmcn'roN, A. O. T11-muros. 

